/*
 * This file is part of Cube.
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2020-2022 Cube Team.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.shixincube.app.ui.base;

import java.lang.ref.Reference;
import java.lang.ref.WeakReference;

public class BasePresenter<V> {

    protected BaseActivity activity;

    protected Reference<V> viewRef;

    public BasePresenter(BaseActivity activity) {
        this.activity = activity;
    }

    public void attachView(V view) {
        this.viewRef = new WeakReference<V>(view);
    }

    public boolean isViewAttached() {
        return this.viewRef != null && this.viewRef.get() != null;
    }

    public void detachView() {
        if (null != this.viewRef) {
            this.viewRef.clear();
            this.viewRef = null;
        }
    }

    public V getView() {
        return (null != this.viewRef) ? this.viewRef.get() : null;
    }
}
